Method of producing ornamental fabric



Patented Dec. 25 1934. t

METHOD OF PRODUCING ORNALIENTAL FABRIC Camille Dreyfus, New York, N. Y.,and Herbert Platt, Cumberland, Md., assignors to Celanese Corporation ofAmerica, a corporation of Dela-1 ware No Drawing. Application December20, 1928,

Serial No. 327,471 1 5 Claims. (Cl. 28-1) This invention relates to thepreparation of warp consisting wholly of one kind of yarn and fabricscontaining yarns of organic derivatives of a weft consisting wholly ofanother kind of yarn, cellulose having on at least a part of the surfacewill not produce the desired result, since on the J thereof a pebble orcockle effect produced by shrinking of the one kind of yarn, say theweft,

5 chemical action. no cockling of the other yarn say the warp, will 5 Anobject of our invention is to produce cockle be produced, the onlyeffect being that a fabric of or pebble effects on at least part ofthesurface closer weave is produced. by the treatment of. fabricscontaining yarnsof An example of a suitable reagent that causes organicderivatives of cellulose and yarns of the shrinking of one kind of yarnand not of the other fibres with a reagent that causes shrinkage otheris a solution of nitric acid. A solution of 10 of one kind of yarn andnot of the other. Other nitric acid causes yarn of organic derivativesobjects of our invention will appear from the of cellulose such ascellulose acetate to shrink, following detailed description. while itdoes notcause yarns of cotton, reconsti- In accordance with ourinvention, we produce tuted cellulose, silk or wool to shrink. Thenitric ornamental effects on fabrics by treating mixed acid may be ofsuitable concentration say from 15 fabrics, which are so constructedthat either the 28 to 60 Tw. and may be employed at temperwarp or weftor both contains both yarns of oratures of 0 to 60 C. Treatment of thefabric anic derivatives of cellulose and yarns of other for 1 to 5minutes or more is usually sufficient to fibres, with a reagent thatcauses shrinkage of produce the result. If the solution is at higher theone kind of yarn and not the other. Because temperature, a lowerconcentration of the nitric 20 of the shinkage of one kind of yarn andnot the acid and less time'is r q other, the yarn that does shrinkcauses the other The reagent for causing the shrinking may be yarn tocockle, thus producing novel effects. applied to the whole surface ofthe fabric or it The yarn made of the organic derivatives of celmay beapplied locally in the form of paste or by lulose may be made of organicesters such as celushin or y sp ayin t st n so that 25 lulose acetate,cen l format-e, ell l prothe cockle effect is obtained in only certainprepionate and cellulose butyrate. This yarn may determined Portions thec, e y y be sized or unsized prior to treatment with the rna n al fi tsmay be p du d. shrinking agent. The yarns of other fibres that y oinvention p bb e vo coo l effects y may be used may be made of silk,cotton, reconbe obtained on fabrics that are woven with ordi- 30stituted cellulose, wool, etc. and ,these yarns may y y n y dinary 1 011 .by h Simple be of low twist or of high twist such as is useplioation f a h al ea nt. The fabric for creping v after treatment maybe dyed, printed or finished As stated, the construction of the fabricshould in y Suitable manner. In order further to ilbe such that theyarns of one kind alternate either lustlate invention but Without beingted 35 in the weft or in the warp with yarns of other thereto th f owspecifi exa p e is n. kind. This alternation may be regular, that is forinstance, an alternation of two yarns of cel- I lulose acetate and twoyarns of cotton, or it may A fabric constructed of a p eOIlSiStingExample 40 be, in a form to produce checks, stripes or wholly ofcellulose acetate yarn and a weft com- 40 complicated designs such asare produced by prising tWO picks o tto ya n alternating w t jacquardlooms. As stated the alternation of the two picks of Cellulose acet ya niS treated two kinds of yarns may occur either in the weft in bathcontaining an aqueous Solution o n alone or in the warp alone or both inthe weft trio c of at Ordinary temperaturesd i th warp h th fabric mayhave a The fabric is allowed to remain in the bath for 45 warpconsisting wholly of yarns of cellulose aceone minute, after wh ch it iWithdrawn, rinsed tate or consisting wholly of yarns of cotton, while incold Water, dried, then scoured With l the weft may be constructed bythe alternation rinsed and A fabric having 8 Cockle UP of two picks ofcotton yarn and two picks of celface is thus formed, this eifect beingproduced lulose acetate yarn. On the other hand the weft by the bucklingof the cotton yarn because of 50 may consist wholly of either celluloseacetate the shrinking of the cellulose acetate This yarn or wholly ofsay cotton yarn, while the warp fabricmay be dyed in any suitablemanner, either ismade up of two ends of cellulose acetate yarn to obtaina solid color, or in a cross-dyeing bath alternating with two ends ofcotton yarn. The wherein one color is imparted to the cotton yarn use ofa mixed fabric, which is constructed of a and another color to thecellulose acetate yarn, 55

thus enhancing the ornamental eflect. It reconstituted cellulose yarn(rayon) is substituted for the cotton yarn in .the above fabric, similarresults are obtained.

- The term alternating" as. used in the appended claims is intended toinclude arranging the yarns in any regular or irregular manner.

It is to be understood that the. foregoing detailed description is givenmerely by way of illustration, and that manyvariations may be madetherein without departing from the spirit or our invention.

Having described our invention, what we claim and desire to secure byLetters Patent is:

shrinkage of the organic derivative of cellulose yarn and no appreciableshrinkage of the other yarn. I v I 1 2. Process of producing a fabrichaving cockle or-pebble efiects comprising treating a fabrichaving atleast its warp or. its weft constructed of 1 yarns of organicderivatives of cellulose alternating with highly twisted yarns ornatural silk with a solution or nitric acid-that causes shrinkage of theorganic derivative of cellulose yarn and no appreciable shrinkage of theother yarn. 1

3; Process of producing a iabric'having cookie or pebble effectscomprising treating a fabric having at least its warp orits weftconstructed of 'yarns of organic derivatives of cellulose alternatingwith highly twisted yarns of non-vegetable fibreswith a solution ofnitric acid of 28 to 50 Tw; that causes the shrinkage of the organicderivative of cellulose yarn and no appreciable shrinkageof the otheryarn.

4. Process of producing a fabric having cookie or pebble efiectscomprising having at least its warp or its wett' constructed of yarns ofcellulose acetate alternating with highly twisted yarns of non-vegetablefibres with a solution of nitric acid of 28 to 50 Tw. that causes theshrinkage of the cellulose acetate yarn and no appreciable shrinkage ofthe other yarn.

5. Process, of producing a fabric having cookie or pebble efiectscomprising treating a fabric having at least its warp or its weftconstructed of yarns of "cellulose acetate alternating with high- 1ytwisted yarns of natural silk with a solution of nitric acid of Ishrinkage 01' the cellulose acetate yarn and no appreciable shrinkage ofthe natural silk yarn. CAMILLE DREYFUS.

' HERBERT PLATE.

treating a fabric 28 to 50 Tw. that causes the 1

